INSANE wave pool in Tokyo. Where's the water?

This is a Swimming pool that makes waves, but is too crowded that you cant even see the water!

It’s summertime here in Tokyo, and since we’re in the middle of the Obon holiday week a lot of Tokyoites have left town for the countryside, leaving a strangely empty city behind. Those who stick around or come in from the countryside pack just about every tourist spot to the gills. We went to the Tokyo Summerland today to catch some sun, and could barely move! Believe it or not, the picture below is of a pool…

Via Kilian-nakamura